A river hides a charming medieval bridge.

The only remaining section of an aqueduct that used to supply water to Manila during the Spanish occupation.

The overgrown remains of an old rail bridge rise above the valley like ancient Greek ruins.

Once the world's largest reinforced concrete structure, this abandoned bridge now beckons urban explorers.

Locals call it the "Give Peas a Chance" bridge because of its distinct graffiti.

A derelict bit of transportation infrastructure hidden in the woods.

The ruins of the suspension bridge hang over Kingsbury Run as a ghost of racial prejudice.

Known as the most dangerous bridge in the world, the Hussaini Hanging Bridge is only one of many precarious rope bridges in Northern Pakistan.